1115657 has 2 divisors, whose sum is σ = 1115658. Its totient is φ = 1115656.

The previous prime is 1115641. The next prime is 1115683. The reversal of 1115657 is 7565111.

It is an a-pointer prime, because the next prime (1115683) can be obtained adding 1115657 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1048576 + 67081 = 1024^2 + 259^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115657 - 2⁴ = 1115641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557828 + 557829.

It is an arithmetic number, because the mean of its divisors is an integer number (557829).

2^1115657 is an apocalyptic number.

It is an amenable number.

1115657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115657 is an equidigital number, since it uses as much as digits as its factorization.

1115657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1050, while the sum is 26.

The square root of 1115657 is about 1056.2466567994. The cubic root of 1115657 is about 103.7154760052.

The spelling of 1115657 in words is "one million, one hundred fifteen thousand, six hundred fifty-seven".